50 Killer Conditioning Workouts: A reference packed with 50 gut-busting, mind hardening workouts that you can add to your training program to lose fat, get in shape, and just be a nastier individual all around.

Killer Conditioning System Handbook: This information-laden reference is chock full of JP's insight on all things conditioning, and answers many of the questions that he's received over the years on the subject. This is an invaluable addition to any training library.